Packaging laminate with good gas and aroma barrier properties and method of manufacturing the laminate and packaging containers manufactured from the laminate

摘要

Packaging laminate for conversion through fold forming and sealing to a packaging container with good gas and aroma barrier properties. The packaging laminate has a skeletal layer and a gas and an aroma barrier layer, placed on one side of the skeletal layer, of an organo-functional siloxane polymer which, by means of co-valent bindings, is bound to the skeletal layer by a layer of polyolefine placed between the skeletal layer and the gas and aroma barrier layer. The packaging laminate can be manufactured through coating one side of a strip of a polyolefine coated paper or cardboard or of polyolefine with a layer of an organo-functional siloxane polymer solution, then drying the layer and finally hardening the dried layer through electron radiation in order to bind the layer co-valently to the strip.